Heating-stove



.E; N. CUMMINGS.

Heating Stove.

Patented Oct. 16, 1866,

I11 0 en 2 07".

-, UNITED STATESPATENT OFFICE.

E. N. OUMMlNGS, OF COLEBROOK, NE HAMPSHIRE.

HEATING-STOVE.

Specification forming part of Letters Patent No. 58,782, dated October16, 1866; antedated October 4, 1866.

To all whom it may concern:

Be it known that I, E. N. CUMMINGS, of Golebrook, in the county of Coosand State of New Hampshire, have invented a new and useful Improvementin Stoves; and I do hereby declare that the following; is a full, clear,and exact description thereof, which will enable others skilled in theart to make and use the same, reference being had to the accompanyin gdrawings, forming a part of this specification, in which- Figure 1 is avertical section taken in the direction of its length in the line yy,Fig 2, of a stove made according to my invention. Fig. 2 is a horizontalsection on the line 00 of Fig. 1.

Similar letters of reference indicate like parts.

The object of this invention is to improve heating-stoves by increasingtheir radiatingsurfaces without enlarging their size or increasin gtheir cost. It is adapted for wood or other fuel.

The letter A designates the lower part of the stove. This part may becast of any convenient size and shape, with a door for receiving fueland a draft-register. If it is intended for bnrnin g coal, it shouldhave a grate and an ash-pit.

In this example I have shown it made with parallel sides and without agrate. Its top is made or cast with a series of oblong slots, B, thatextend across it, and which receive fiat pipes or fines F, that areextended upward to a drum, E, whose lower side they enter.

The drum E is of less height than the fuelchamber A, and has twoopenings on its topone, C, for a fine-pipe, and another, K, for culinaryuses or for ventilation.

The fines F are serpentine in form, as shown in the drawings. They maybe of any desired length, and may be made of cast or wrought iron. Theirembouchnres in the drum E are controlled by dampers O J, having handlesH I, that project from the front of the drum.

The damper J controls those fines or pipes F which open beneath thecover-opening K,

so as to allow the products of combustion to ascend in aline with it andagainst any vessel placed in it. The damper 0 controls those openings Fwhich are behind damper J.

When the forward damper is open, the damper C may be closed, and viceversa, and

both may be partially closed to regulate the fire.

The air-spaces G between the fines F are, of course, of like serpentineform, and their shape insures not only a large radiating-surface for thefiues, but has a tendency to promote the formation of currents in theair. The salient portions of the interior of each fiue are those whichbecome more highly heated by the gases from the fire, and consequentlythe re-entering portions of the air-spaces which are opposite to thesalient portions of the interior of the fines will be more heated thanthe other parts along the exterior of the fines.

The inequality-in the heat of different parts of the pipes will promotethe formation of currents of air, in addition to the ordinary tendencyin heated air to ascend.

The serpentine form of the fines gives several advantages:

First. It presents a very large heating-surface, which may be increasedto any extent by lengthening the pipe.

Second. It brings the heat in contact with the surface, therebyaffording it a chance to radiate.

Third. The straight draft, by which nearly two-thirds of the heat islost, is done away with, the heat being obliged to pass through theseveral serpentine pipes, which constitute a succession of angles.

Fourth. There is no draft from the mouth to the extreme back and top orexit fine, as in common stoves. Therefore the box part itself radiatesmuch more heat, since more time is allowed for the passage of the gases.

Fifth. The dampers are so arranged that the fire can be controlled andthe fuel saved, by nearly shutting them both, leaving just room enoughfor the smoke to pass off, at the same time opening the register at themouth, giving the fire air enough to make it burn slowly without draft.Thus the heat is nearly all saved, requiring but little wood.

Sixth, the dampers are so arranged that they may be wholly or partlyclosed, thereby throwing the draft to the front or back part of thestove. The stove presents such a large heating-surface, and the fire isso controlled and the heat so economized, that no part of the stove isoverheated, consequently the air is not scorched, but is heated as by afurnace,

It will produce a large amount of heat so grad tially as abovedescribed, its upper and lower ually that the room is warmed nearlythe'same parts, A E, being connected by serpentine in every part, thusmaking it desirable for fiues,whose openings in the upper part,E,are

school-rooms in particular. controlled by two independent dampers, sub-I claim that my arrangement Will save fully stantially as shown.

one-half the fuel. E. N. CUMMINGS. Q

- I claim as new and desire to secure by Let- Witnesses: ters Patent- W.W. TITUS,

A stove for heating purposes made substan- G. W. BRAOKETT.

